From cc61fbf6d70d402fb5f5f89dbd61e1d0f93593f7 Mon Sep 17 00:00:00 2001
From: Meow <30401521+me0wg4ming@users.noreply.github.com>
Date: Sat, 14 Mar 2026 09:52:16 +0100
Subject: [PATCH] fix for  libtotem.lua crashing with Invalid spell slot

---
 libs/libspell.lua | 3 +++
 libs/libtotem.lua | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/libs/libspell.lua b/libs/libspell.lua
index 65298fad..e99de82a 100644
--- a/libs/libspell.lua
+++ b/libs/libspell.lua
@@ -108,6 +108,9 @@ function libspell.GetSpellInfo(index, bookType)
       name = GetSpellName(id, bookType)
     end
   else
+    if not bookType or (bookType ~= BOOKTYPE_SPELL and bookType ~= BOOKTYPE_PET) then
+      return nil
+    end
     name, rank = GetSpellName(index, bookType)
     id, bookType = libspell.GetSpellIndex(name, rank)
   end
diff --git a/libs/libtotem.lua b/libs/libtotem.lua
index 9836a4b3..e0bd7c68 100644
--- a/libs/libtotem.lua
+++ b/libs/libtotem.lua
@@ -252,6 +252,8 @@ end)
 
 -- Hook CastSpell to store pending name/icon per slot
 hooksecurefunc("CastSpell", function(id, bookType)
+  if not id or not bookType then return end
+  if bookType ~= BOOKTYPE_SPELL and bookType ~= BOOKTYPE_PET then return end
   local name, rank, icon, _, _, _, spellId = libspell.GetSpellInfo(id, bookType)
   if not name then return end
   libtotem:CheckAddQueue(name, rank, icon, spellId)